Black Box LR1530A-R3 manual Configure Network Address Translation NAT, NAT Exports, Enabled

Page 54

Applications

Configure Network Address

Translation (NAT)

Support is provided for Network Address Translation (NAT). Network Address Translation is a technique which translates private IP addresses on a private network to valid global IP addresses for access to the Internet. Port translation (NAPT) allows more than one private IP address to be translated to the same global IP address. Port translation allows data exchanges initiated from hosts with private IP addresses to be sent to the Internet via the router using a single global IP address. A global IP address must be assigned to the WAN link upon which NAPT is enabled for NAPT to work. The global IP address will be assigned by the ISP.

To use NAPT, the private network addresses of the services that will be available globally must be assigned:

7NAT Exports

Location: Main

ÄConfiguration

ÄApplications Set up

ÄNAT Exports

ÄEdit Services

Äenter the private network IP address of each service offered.

The NAT enabled option allows you to enable Network Address Translation.

7NAT Enabled Location: Main

ÄConfiguration

ÄWAN Set up

ÄRemote Site Set up

ÄEdit Remote Site

ÄProtocol Set up

ÄIP Parameters

ÄNAT Enabled

ÄEnabled

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Image 54

Contents Frame Relay/Leased Line Bridge/Router Specifications Normas Oficiales Mexicanas Electrical Safety Statement Page Page Page Contents Introduction to Filtering Appendix D Software Upgrades Page Unpack the unit Select a SiteIdentify the Connectors Rear View of the CSU-DSU routerConnect to the Console Make the LAN ConnectionsMake the WAN Link Connection Installation Power Up the router Login and Enter the Required ConfigurationMandatory Configuration Mandatory ConfigurationSetting the Link Interface Type Set Link Interface Type Location MainLink Interface Type T1/E1 Selection Location Main Setting the T1/E1ParametersService parameters Location Main Framed/unframed/SF/ESFAs specifed First channel Number number of channelsSet Link Interface Type Location Main Identify the Status LEDs GreenFront View of the router Typical Applications & HOW to Configure Them Managing the router Using Menus Configuration Option Name Location Main ConventionsOption Name Basic Frame Relay Configuration Frame Relay configurationFrame Relay enable Location Main Link Speed Location MainLink Speed Auto Learning the Frame Relay Configuration Manual Configuration LMI Type Auto-Learning Location MainLMI Type Quick Start Frame Relay IP AddressIP Address / Subnet mask size PPP Encapsulation Location Main Disabled Basic Leased Line ConfigurationFrame Relay disable Location Main Quick Start PPP Leased Line ConnectionsBasic PPP Leased Line Configuration Local IP Address Location MainBridge Connection Should You Bridge or Route? Configure as an Ethernet Bridge Bridged Local Area NetworksIP Address Applications Configure as an Ethernet IP router IP Routed Local Area NetworksIP Address Define an IP Default Gateway Default Gateway Location MainDefault Gateway Define an IP Static Route Edit Static Route Location MainRemote Site Next Hop Cost Add Define an IP Subnet Mask IP Address & Subnet Size Location Main IP Address / mask sizeApplications Configure as an Ethernet IPX router Novell Servers in Both LocationsApplications Novell Servers in One Location Only IPX Routed Local Area Networks Servers on one sideIPX Frame Types Location Main PPP Link Configuration Overview Numbered LinksUnnumbered Links Server Configure Dynamic Host Configuration ProtocolDhcp Services Location Main IP Address Pool Location MainLocal + External DNS Server Configuration DNS Set-Up Location MainEnabled Configure Network Address Translation NATNAT Enabled Location Main NAT ExportsTranslation type Location Main Configure PPP Security Security Level Location MainSecurity Level Incoming PAP Password Incoming Chap Secret Outgoing PAP Password Outgoing Chap SecretSecurity Database Entry Location Main Configure Firewall 10 Sample Firewall ApplicationFirewall WAN Remote Site Filter direction Location Main FTP & WWW Designated Servers Location MainFirewall LAN Filter Direction Location Main Firewall Table Entry Location MainFirewall Location Main Applications MAC Address Filtering Introduction to FilteringPattern Filtering Not Introduction to Filtering Bridge NetBIOS &NetBEUI Microsoft WindowsPopular Filters IP & Related TrafficIP Router NetBIOS over TCPBanyan Other interesting TCP PortsAppendix a Menu Trees Menu Tree From previous Page Appendix B Octet Locations on Ethernet Frames Octet Locations on Ethernet Frames Ethernet Type Codes ARPOctet Locations on Ethernet Frames Octet Locations on a Bridged XNS Frame Octet Locations on Ethernet Frames Opening the case Appendix C Servicing InformationIdentifying the Internal Components CPUJ11 Sanity Timer To Clear a Lost PasswordForce Zmodem Software Load Connecting to the Console Connector Figure C-3 Rear View of the Console and LAN ConnectorsModule WAN Interface ConnectionPinout Information CSU/DSU ModuleT1/E1 Module T1/E1Universal WAN Module Connecting cable must be a shielded cable Link PinoutsServicing Information RS232C / V.24 Link Pinouts DCERS530 / RS422 Link Pinouts Figure C-8 RS530 / RS422 Link Pinouts11 / X.21 Link Pinouts Figure C-9 V.11 / X.21 Link Pinouts11 / X.21 DB25 to DB15 Connector Cable Figure C-10 V.11 / X.21 DB25 to DB15 Connector CableNull-Modem Cable Configuration Figure C 11 V.35 Null-Modem CableRS232 / V.24 Null-Modem Cable Figure C-12 RS232 / V.24 Null-Modem CableSignal Ground DTE Ready a RS530 / RS422 Null-Modem CableServicing Information Appendix D Software Upgrades Considerations Servicing Information Page PC used for Tftp transfers Link